Improvement in gas-lighting apparatus



R. M. POTTER 3c, W. W.THUMAS.

Gas-Lighting Apparatus.

Patented Feb. 23,1875

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UNITED ,STATES PATENT EEICE.

ROBERT M. POTTER AND WILLIAM W. THOMAS, OF JERSEY CITY, N. J.

IMPROVEMENT IN GAS-LIGHTING APPARATUS.

Specification forming part of L tters Patent No. [60,228, dated February' 23, 1875; application filed February 2, 1875.

To all whom it may concern:

Be it known that we, ROBERT M. POTTER and WILLIAM W. THoMAs, both of Jersey City, in the county of Hudson and State of New Jersey, have invented certain Improvements in Gas-Lighting Apparatus, and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, forming partof this specification.

The object of this invention is to provide for the lighting up and putting out of all the gaslights in a city, town, or district, or in any building or place by manipulation at the gasworks, or at one central or other convenient station.

In carrying out the invention we use, as has been frequently done, in connection with each illuminating-burner and its pipe, a sepa-rate jet-burner of very small size, which is supplied by a separate branch pipe, and which is always kept lighted for the purpose of ignitin g the gas from the illuminating-burner whenever it is let on.

The invention consists in novel means whereby the gas is let onto and shut oit from the illuminating-burners through the action of the pressure of air supplied by a system of pipes which are providedt'orthe purpose, corresponding with the system of main and service pipes for the gas, such pressure being controlled by manipulation at the gas-works or other central or convenient station.

In the accompanying drawing, Figure l is a side elevation of a gas-burner constructed in accordance with our invention. Fig. 2 is a central vertical longitudinal section of the same.

A represents the illuminatingburner attached, by a pipe, A', to the top of a box or case, G1, provided at its bottom with a hollow or tubular neck, dx, for attaching it to the service or gas-supply pipe. B is a pipe connected with the bottom of the case G1 and neck d for the `reception of the gas which is to be conveyed to the burner A for illumination, said pipe extending from the neck dx upward into the case G1 nearly to the top g2 thereof. The upper end e of the pipe B is closed, and in the sides near said closed end, are perforations b. To said closed upper end e a cap or inverted cup, J, is attached by means of a screw, i.

From the top g2 a curtain, K, extends downward to within a short distance of the bottom g1, by which means two annular chambers, Z1 Z2, are formed inside the case G1, the inner chamber, l1, lying' between the pipe B and the curtain, and the outer one, Z2, lying between the curtain and the sides of the case. E is a pipe connecting with a system oiair-pipes which lead from the gas-Works or other central or convenient station, in a similar manner to the main and service pipes. This pipe E passes through the bottom g1 and extends upward nearly to the top of the case G1, between the curtain K and the sides of the case. C is a small pipe leading from the neck d? below the bottom g1 of the case C' and below the pipe B, and extending upward to within a short distance of the tip c of the burner, and having its upper end constructed to form a very small jet-burner, d. VThe pipe O is provided with a valve, c, whereby the supply of gas may be regulated, or may be entirely shut oft', it' desired. The pipe A and the upper portion of the pipe G are surrounded by a casing, G2, in which are perforations f for the admission of air. At the upper end of the casing G2 is a rounded or truncated cap, G3, surrounding the jet-burner cl and lower portion of the illuminating-burner A, the tip A of the latter protruding through an opening in the cap. Near the upper end of the pipe G is attached a platinum-wire brush, D, for the purpose of being heated by the iiame from the burner A and by the jet from d, and assisting in theignition of the gas at the burner A from the jet-burner d, and also serving to reignite said jet in the event of its being accidentally blown out. The case G1 is supplied with any suitable liquid through an oriiice provided with a screw-plug or cap, h. The liquid may be armixture of water and glycerine, because such a mixture forms a non-freezing substance. The liquid extends up to within a short distance of the lower edge of the cap J, as indicated by the line x :v in Fig. 2. By means of the screwz' the cap J may be raised or lowered for the purpose of regulating the distance between its lower edge and the surface of the liquid.

The gas reaches the burner A from the pipe B by passing through the perforations b, then downward under the cap J and upward outlight. When the gas is to be relighted theA pressure is withdrawn, so as to allow the liquid to regain its equilibrium and the gas to ow to the burner, where it is ignited by the jet-burner d, which remains constantly burning, as the pipe O is not affected by the application and withdrawal of the air-pressure.

What we claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the burner A and gas-pipe B, of the cap or inverted cup J, curtain K, and air-pipe E, substantially as and for the purpose shown and described.

2. The platinum-brush D, in combination with the burner A and pipe C, substantially as shown and described, for the purpose specied.

ROBERT M. POTTER. W. W. THOMAS.

Witnesses:

MICHAEL RYAN, BENJAMIN W. HOFFMAN. 

